I'll give you the benefit of the doubt that you are not a native English speaker and not just sea lioning. Here is the break down for you:
Socialism for the rich = subsidized losses for the rich, see every bailout for the past forever
Unions for the dogs = police unions. Incredibly powerful unions that prevent cops from being held accountable in any way. They can kill a guy and the union will prevent them from being fired. All other unions are subject to union breaking efforts often by means of the police
Scraps for the rest = you get nothing, you own nothing, your unions will be attacked by all means available